Limit your kids' screen time for better school results

New York: If you limit the amount of time your kids spend on the computer or in front of the TV, they are likely to perform better in school, have better sleep, behave better and have lower risk of obesity.

"As screen time goes up, school performance goes down, but that does not happen overnight. If I watch a lot of TV today, I do not get bad marks in my class tomorrow," said Douglas Gentile, an associate professor of psychology at Iowa State University.

It may take up to seven months to see the benefits of limiting screen time of children, the study found.

"Parents are not likely to notice that putting limits on the children's media is having these effects seven months later," Gentile added.

Children got more sleep if parents limited screen time, which also resulted in lower risk of obesity.